STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)		$ 99,405	$ (20,527)	$ 13,658
Adjustments to reconcile net income (loss) to net cash and cash equivalents provided by operating activities:
Change in deferred policy acquisition costs		3,694	3,599	3,627
Change in deferred sales inducements		841	809	834
Change in value of business acquired		15,919	32,482	22,364
Change in benefit reserves, net of change in ceded reinsurance recoverable		(52,745)	(9,440)	43,176
Change in income tax accruals		2,510	(1,149)	(4,535)
Change in claims and claims settlement expenses		123	5,146	3,471
Change in other operating assets and liabilities - net		6,835	132	(2,124)
Change in checks not yet presented for payment		1,800	(5,655)	(3,658)
Amortization (accretion) of investments		(1,091)	(762)	3,046
Interest credited to policyholder liabilities		52,299	55,015	54,914
Net derivative (gains) losses		49,085	90,238	37,457
Net realized investment (gains) losses		(8,404)	(458)	(1,690)
Change in unrealized (gains) losses related to limited partnerships		(3,270)	99
Net cash and cash equivalents provided by/(used in) operating activities		167,001	149,529	170,540
CASH FLOWS FROM INVESTING ACTIVITIES
Sales of available-for-sale securities and mortgage loans		342,876	497,472	231,374
Maturities of available-for-sale securities and mortgage loans		176,014	263,745	351,597
Purchases of available-for-sale securities and mortgage loans		(445,747)	(593,984)	(475,044)
Sales of limited partnerships		76,478	4,041	252
Purchases of limited partnerships		(3,673)	(11,562)
Change in affiliated short-term note receivable			25,000	(25,000)
Cash received in connection with derivatives		55,289	28,797	76,494
Cash paid in connection with derivatives		(123,848)	(110,962)	(135,918)
Proceeds from the maturity or prepayment of policy loans		71,242	78,018	75,402
Payments for the origination of policy loans		(46,591)	(49,386)	(55,796)
Net settlement on futures contracts		1,153	(5,989)	(3,030)
Other				778
Net cash and cash equivalents provided by/(used in) investing activities		103,193	125,190	41,109
CASH FLOWS FROM FINANCING ACTIVITIES
Policyholder deposits		10,280	13,362	15,578
Policyholder withdrawals		(116,958)	(135,940)	(134,335)
Capital contributions from AUSA				68,492
Return of capital to TA Corp/AUSA		(47,505)	(88,341)	(100,000)
Change in payables for collateral under securities loaned, reverse repurchase agreements and derivatives		16,452	42,562	(59,936)
Cash dividend paid to TA Corp		(140,000)	(75,000)
Cash receipts from affiliated short-term note payable		48,000
Cash paid on affiliated short-term note payable		(38,000)
Net cash and cash equivalents provided by/(used in) financing activities		(267,731)	(243,357)	(210,201)
Net increase (decrease) in cash and cash equivalents	[1]	2,463	31,362	1,448
Cash and cash equivalents, beginning of period		267,844	236,482	235,034
Cash and cash equivalents, end of period		$ 270,307	$ 267,844	$ 236,482

[1] Included in net increase (decrease) in cash and cash equivalents is interest paid (2017 - $137; 2016 - $44; 2015 - $15), interest received (2017- $7; 2016 - $31; 2015 - $18), and income taxes paid (2017 - $108; 2016 - $0; 2015 - $0).