Parent Company Financial Statements Parent Company Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 8,311	$ (348,636)	$ 304,030
Net Cash Provided by (Used in) Investing Activities	(418,334)	(84,239)	(459,884)
Payments of Dividends	0	1,628	0
Net Cash Provided by (Used in) Financing Activities	412,205	429,469	164,477
Increase (decrease) in cash and cash equivalents	2,182	(3,406)	8,623
Beginning of year	30,502	33,908	25,285
End of period	32,684	30,502	33,908
Parent Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	2,654	5,693	(483)
Purchase of and proceeds from sale of marketable securities	673	1,000	(5,797)
Net payments for investments in and advances to subsidiaries	(992)	(732)	(12,172)
Net Cash Provided by (Used in) Investing Activities	(319)	268	(17,969)
Proceeds from Stock Options Exercised	177	130	188
Payments of Dividends	(5)	(1,628)	0
Proceeds from and repayment of advances from subsidiaries	0	(3,527)	30
Net Cash Provided by (Used in) Financing Activities	172	(5,025)	218
Increase (decrease) in cash and cash equivalents	2,507	936	(18,234)
Beginning of year	5,270	4,334	22,568
End of period	$ 7,777	$ 5,270	$ 4,334