The following table shows the gross carrying amount and accumulated amortization of intangibles and estimated amortization  related to continuing operations (in thousands):  The amortization expense of the definite-lived intangible assets and other assets for the years ended December 31, 2010, 2009  and 2008 was $18.8 million, $22.4 million and $18.3 million, respectively. The following table shows the estimated amortization  expense of the definite-lived intangible assets and other assets for the next five years (in thousands):  (a) During 2010 and 2009, we purchased $10.2 million and $15.2 million, respectively, in additional alarm monitoring contracts.  On October 29, 2009, concurrently with the closing of the offering of the 9.25% Notes we entered into the Bank Credit  Agreement by amending and restating the previous bank credit agreement. On August 19, 2010, we entered into an amendment  (the Amendment) of our Bank Credit Agreement. The final terms of the Bank Credit Agreement, as amended, are set forth  below: The Bank Credit Agreement is collateralized by $1,001.8 million of our tangible and intangible assets. 44    Sinclair Broadcast Group  $_{•}$  A six-year term loan facility (Term Loan B) of $330.0 million. Under the Amendment, we paid down $35.0 million of  the outstanding $305.0 million balance under the Term Loan B and repriced the remaining $270.0 million outstanding. The Term Loan B bears interest at LIBOR plus 4.00% with a 1.5% LIBOR floor and will continue to amortize  principal at a rate of 0.25% per quarter commencing on March 31, 2011, continuing until the scheduled final payment  on October 29, 2015 with 94.19% due at maturity or upon earlier termination of the Term Loan B pursuant to the  terms in the Bank Credit Agreement. $_{•}$  We have the right to prepay the Term Loan B at any time; provided, however, that if we prepay, reprice downward or  otherwise refinance all or any portion of the Term Loan B prior to August 19, 2011, then we will be required to pay  the Term Loan B lenders a prepayment premium equal to 1.00% of the aggregate amount prepaid, repriced or  otherwise refinanced. Any prepayments on the Term Loan B are deducted from the scheduled final payment due on  October 29, 2015.  $_{•}$  An amended and restated revolving credit facility (the Revolving Credit Facility). Under the terms of the Revolving  Credit Facility, $60.5 million in existing commitments will remain in place under the revolving credit facility pricing in  the previous bank credit agreement, which as of December 31, 2010 was LIBOR plus 0.75% and will expire June  2011. In addition, $75.4 million in commitments were extended until December 31, 2013 at a price of LIBOR plus  4.00% with a 2.0% LIBOR floor. We have the right to prepay the Revolving Credit Facility at any time without  prepayment penalty. As of December 31, 2010, we did not have any amounts drawn under the Revolving Credit  Facility.  $_{•}$  Provision for additional incremental term loan capacity up to $100.0 million.  5. NOTES PAYABLE AND COMMERCIAL BANK FINANCING:  Bank Credit Agreement  As of December 31, 2010 As of December 31, 2009 Weighted  Average  Amortization  Period  Gross Carrying  Amount  Accumulated  Amortization  Gross Carrying  Amount  Accumulated  Amortization  Amortized intangible assets:  Network affiliation  25 years  $ 245,025  $ (132,013)  $ 245,160  $ (122,718)  Decaying advertiser base  15 years  122,375 (111,675) 122,375 (106,248) Other  97,200 (a)  (36,260)  86,983 (a) (32,147)  Total $ 464,600  $ (279,948)  $  454,518 $  (261,113) For the year ended December 31, 2011  $ 17,952  For the year ended December 31, 2012  16,796  For the year ended December 31, 2013  14,877  For the year ended December 31, 2014  12,552  For the year ended December 31, 2015  12,349  Thereafter 110,126 $ 184,652 