Consolidated Statements of Stockholder's Equity - USD ($) $ in Thousands	Total		Common stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Retained earnings
Balances at Dec. 31, 2012	$ 2,136,297		$ 7,032	$ 771,041	$ 635,699	$ 722,525
Increase (Decrease) in Stockholder's Equity
Net income	128,742					128,742
Other comprehensive loss, net of income taxes	(289,945)	[1]			(289,945)
Dividends	(102,436)					(102,436)
Share-based compensation	2,578			2,578
Income tax benefit on share-based compensation	496			496
Balances at Dec. 31, 2013	1,875,732		7,032	774,115	345,754	748,831
Increase (Decrease) in Stockholder's Equity
Net income	317,369					317,369
Other comprehensive loss, net of income taxes	257,264	[1]			257,264
Dividends	(316,401)					(316,401)
Share-based compensation	3,384			3,384
Income tax benefit on share-based compensation	165			165
Balances at Dec. 31, 2014	2,137,513		7,032	777,664	603,018	749,799
Increase (Decrease) in Stockholder's Equity
Net income	190,455					190,455
Other comprehensive loss, net of income taxes	(369,580)	[1]			(369,580)
Dividends	(139,533)					(139,533)
Common stock issuance	60,803		201	60,602
Share-based compensation	1,655			1,655
Income tax benefit on share-based compensation	953			953
Balances at Dec. 31, 2015	$ 1,882,266		$ 7,233	$ 840,874	$ 233,438	$ 800,721

[1] Other comprehensive income (loss) includes the non-credit component of impaired losses on fixed maturities available-for-sale, net of future policy benefits, DAC and VOBA adjustments and income taxes, in the amounts of $(6,596), $177, and $18,388 for the years ended December 31, 2015, 2014, and 2013, respectively.