Earnings Per Share Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) from Continuing Operations Available to Common Stockholders, Diluted		$ 17,471	$ 17,583	$ 52,101	$ 47,453
Net income from discontinued operations		1,186	1,047	3,881	4,357
Net Income (Loss) Available to Common Stockholders, Diluted		$ 18,657	$ 18,630	$ 55,982	$ 51,810
Income (Loss) from Continuing Operations, Per Diluted Share		$ 0.21	$ 0.21	$ 0.61	$ 0.57
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share		0.01	0.01	0.05	0.05
Earnings Per Share, Diluted		0.22	0.22	0.66	0.62
Common Stock, Dividends, Per Share, Cash Paid		$ 0.11	$ 0.10	$ 0.33	$ 0.30
Common Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Basic Common Shares Outstanding		82,556,225	81,301,499	82,270,849	81,280,014
Incremental Common Shares Attributable to Share-based Payment Arrangements	[1]	1,233,888	956,446	1,333,830	959,917
Incremental Common Shares Attributable to Call Options and Warrants	[1]	1,098,198	1,304,338	1,136,493	1,190,549
Weighted Average Number Diluted Shares Outstanding Adjustment		2,332,086	2,260,784	2,470,323	2,150,466
Weighted Average Number of Shares Outstanding, Diluted	[1]	84,888,311	83,562,283	84,741,172	83,430,480

[1] The diluted EPS computations for the three and nine months ended September 30, 2017 and 2016 do not assume the conversion, exercise, or contingent issuance of the following shares for the following periods because the result would have been anti-dilutive for the periods indicated. As a result of the anti-dilution, the potential common shares excluded from the diluted EPS computation are as follows: Three months ended September 30, Nine months ended September 30, 2017 2016 2017 2016Shares excluded due to exercise price exceeding the average market price of common shares during the period (total outstanding):(In thousands)Potential common shares from: Stock options48 224 74 285Total shares excluded due to exercise price exceeding the average market price of common shares during the period48 224 74 285