Unaudited Condensed Consolidated Statements of Common Stockholders' Equity ( Deficit) Statement - USD ($)	Total	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Common Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		$ 1,068,357,000		$ (108,000)
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent	$ 1,090,518,000				$ 0
Equity, Attributable to Noncontrolling Interest	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	19,115,000
Other Comprehensive Income (Loss), Net of Tax	(7,174,000)		$ (7,174,000)
Net Income (Loss) Available to Common Stockholders, Basic	19,115,000
Dividends, Common Stock	(31,395,000)
Stock Issued During Period, Value, Other	31,000	31,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	0
Return of Capital		(12,280,000)
Payments of Ordinary Dividends, Common Stock	(19,115,000)
Payments to Noncontrolling Interests	0
Other Comprehensive Income (Loss), Net of Tax	11,398,000
Net Income (Loss) Available to Common Stockholders, Basic	62,552,000
Return of Capital	46,500,000
Proceeds from Contributions from Parent	0
Noncontrolling Interest, Increase from Sale of Parent Equity Interest	$ 0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		1,056,108,000	15,095,000	(108,000)
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent	$ 1,071,095,000				0
Equity, Attributable to Noncontrolling Interest	0
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	8,006,000
Other Comprehensive Income (Loss), Net of Tax	9,732,000		9,732,000
Net Income (Loss) Available to Common Stockholders, Basic	8,006,000
Dividends, Common Stock	(35,546,000)
Stock Issued During Period, Value, Other	16,000	16,000
Return of Capital		(34,177,000)
Payments of Ordinary Dividends, Common Stock	(1,369,000)
Payments to Noncontrolling Interests	0
Noncontrolling Interest, Increase from Sale of Parent Equity Interest	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,053,303,000	1,021,947,000	24,827,000	6,529,000
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent					0
Equity, Attributable to Noncontrolling Interest	$ 0
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	35,431,000
Other Comprehensive Income (Loss), Net of Tax	8,840,000		8,840,000
Net Income (Loss) Available to Common Stockholders, Basic	35,431,000
Stock Issued During Period, Value, Other	21,000	21,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,097,595,000	1,021,968,000	33,667,000	41,960,000
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent					0
Equity, Attributable to Noncontrolling Interest	$ 0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,129,722,000	1,021,992,000		25,182,000
Common Stock, Shares, Outstanding	108,907,318
Stockholders' Equity Attributable to Parent	$ 1,076,468,000				0
Equity, Attributable to Noncontrolling Interest	53,254,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	17,162,000
Other Comprehensive Income (Loss), Net of Tax	7,386,000		7,386,000
Net Income (Loss) Available to Common Stockholders, Basic	17,162,000
Dividends, Common Stock	(26,720,000)
Stock Issued During Period, Value, Other	26,000	26,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(2,552,000)
Return of Capital		0
Payments of Ordinary Dividends, Common Stock	(26,720,000)
Payments to Noncontrolling Interests	(52,000)
Other Comprehensive Income (Loss), Net of Tax	6,518,000
Net Income (Loss) Available to Common Stockholders, Basic	113,896,000
Proceeds from Contributions from Parent	150,000,000
Noncontrolling Interest, Increase from Sale of Parent Equity Interest	$ 46,935,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		1,022,018,000	36,680,000	15,624,000
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent	$ 1,074,322,000				0
Equity, Attributable to Noncontrolling Interest	50,650,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	41,794,000
Other Comprehensive Income (Loss), Net of Tax	(434,000)		(434,000)
Net Income (Loss) Available to Common Stockholders, Basic	41,794,000
Dividends, Common Stock	(30,374,000)
Stock Issued During Period, Value, Other	29,000	29,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(20,747,000)
Return of Capital		0
Payments of Ordinary Dividends, Common Stock	(30,374,000)
Payments to Noncontrolling Interests	(623,000)
Proceeds from Contributions from Parent	150,000,000
Noncontrolling Interest, Increase from Sale of Parent Equity Interest	$ 46,935,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		1,172,047,000	36,246,000	27,044,000
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent	$ 1,235,337,000				0
Equity, Attributable to Noncontrolling Interest	76,215,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	54,940,000
Other Comprehensive Income (Loss), Net of Tax	(434,000)		(434,000)
Net Income (Loss) Available to Common Stockholders, Basic	54,940,000
Dividends, Common Stock	(53,052,000)
Stock Issued During Period, Value, Other	11,000	11,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(872,000)
Return of Capital		0
Payments of Ordinary Dividends, Common Stock	(53,052,000)
Payments to Noncontrolling Interests	(1,784,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,310,361,000	$ 1,172,058,000	$ 35,812,000	$ 28,932,000
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent	$ 1,236,802,000				$ 0
Equity, Attributable to Noncontrolling Interest	$ 73,559,000