STATEMENTS OF STOCKHOLDER'S EQUITY - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income		Retained Earnings (Deficit)
Balance at beginning of period at Dec. 31, 2016				$ 1,425,816	$ 55,350		$ (377,274)
Adjusted balance at beginning of period at Dec. 31, 2016					55,350		(377,274)
Net Income (Loss)		$ 24,816
Total other comprehensive income (loss), net of taxes		5,988			5,988
Balance at end of period at Mar. 31, 2017					61,338
Balance at beginning of period at Dec. 31, 2016				1,425,816	55,350		(377,274)
Adjusted balance at beginning of period at Dec. 31, 2016					55,350		(377,274)
Net Income (Loss)							99,405
Cash dividend paid to Transamerica Corporation							(140,000)
Total other comprehensive income (loss), net of taxes					25,149
Return of capital to Transamerica Corporation				(47,505)
Balance at end of period at Dec. 31, 2017		1,043,441	$ 2,500	1,378,311	80,499		(417,869)
Cumulative effect adjustment at Dec. 31, 2017	[2]				(3,023)	[1]	3,023
Adjusted balance at beginning of period at Dec. 31, 2017					77,476		(414,846)
Net Income (Loss)		11,965					11,965
Dividend declared payable to Transamerica Corporation		(200,000)					(200,000)
Total other comprehensive income (loss), net of taxes		(46,376)			(46,376)
Capital contributions from Transamerica Corporation				15,047
Balance at end of period at Mar. 31, 2018		$ 824,077	$ 2,500	$ 1,393,358	$ 31,100		$ (602,881)

[1] See Note 1 Summary of Significant Accounting Policies, for discussion on the adjustment relating to ASU 2016-01

[2] See Note 1 Summary of Significant Accounting Policies, for discussion on the adjustment relating to Accounting Standards Update 2016-01.