Consolidated Statement of Equity Statement - USD ($) shares in Thousands, $ in Thousands	Total	Parent Company [Member]	Preferred Stock [Member]
Temporary Equity, Shares Issued	0
Common Stock, Value, Outstanding	$ 0
Additional Paid in Capital, Common Stock	0
Retained Earnings, Unappropriated	0
Membership Interests	383,397
Parent Company Investment	$ 366,240
Treasury Stock, Shares	0
Treasury Stock, Value	$ 0
Stockholders' Equity Attributable to Parent	749,637
Net Income (Loss) Attributable to Parent	10,738	$ 10,738
Transfers To From Parent Corporate Allocations Including Income Taxes	(48,386)	(48,386)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	2,904	2,904
Accretion of dividends on preferred stock	(885)	$ 885	$ 885
Other Preferred Stock Dividends and Adjustments	$ 0
Temporary Equity, Shares Issued	0
Common Stock, Value, Outstanding	$ 0
Additional Paid in Capital, Common Stock	0
Retained Earnings, Unappropriated	0
Membership Interests	384,282
Parent Company Investment	$ 330,611
Treasury Stock, Shares	0
Treasury Stock, Value	$ 0
Stockholders' Equity Attributable to Parent	$ 714,893
Temporary Equity, Shares Issued	0
Common Stock, Value, Outstanding	$ 0
Additional Paid in Capital, Common Stock	0
Retained Earnings, Unappropriated	0
Membership Interests	0
Parent Company Investment	$ 726,669
Treasury Stock, Shares	0
Treasury Stock, Value	$ 0
Stockholders' Equity Attributable to Parent	726,669
Net Income (Loss) Attributable to Parent	6,483
Accretion of dividends on preferred stock	$ 0
Temporary Equity, Shares Issued	48,219
Common Stock, Value, Outstanding	$ 482
Additional Paid in Capital, Common Stock	695,816
Retained Earnings, Unappropriated	33,401
Membership Interests	0
Parent Company Investment	$ 0
Treasury Stock, Shares	2
Treasury Stock, Value	$ (21)
Stockholders' Equity Attributable to Parent	$ 729,678