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Deferred Policy Acquisition Costs
12 Months Ended
Dec. 31, 2012
DeferredPolicyAcquisitionCostsDisclosuresAbstract  
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4. DEFERRED POLICY ACQUISITION COSTS

The balances of and changes in DAC as of and for the years ended December 31, are as follows:

   2012  2011  2010
 (in thousands)
Balance, beginning of year $ 666,764 $ 1,357,156 $ 1,242,791
Capitalization of commissions, sales and issue expenses   25,081   41,994   275,316
Amortization - Impact of Assumption and experience unlocking and true-ups   274,503   (113,539)   59,874
Amortization - All Other   (86,461)   (602,550)   (238,543)
Changes in unrealized investment gains and losses   26,927   (62)   17,718
Other (1)   -   (16,235)   -
Balance, end of year $ 906,814 $ 666,764 $ 1,357,156

(1) Balance sheet reclassification between DAC and DSI relating to refinement in methodology for allocating DAC/DSI balances for cohorts with both DAC and DSI persistency credits. Refer to Note 7 for impact to DSI.