Earnings Per Share Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 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		$ 21,766	$ 14,183	$ 34,630	$ 29,870
Net income from discontinued operations		1,063	1,245	2,695	3,310
Net Income (Loss) Available to Common Stockholders, Diluted		$ 22,829	$ 15,428	$ 37,325	$ 33,180
Income (Loss) from Continuing Operations, Per Diluted Share		$ 0.26	$ 0.17	$ 0.41	$ 0.36
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share		0.01	0.01	0.03	0.04
Earnings Per Share, Diluted		0.27	0.18	0.44	0.40
Common Stock, Dividends, Per Share, Cash Paid		$ 0.11	$ 0.10	$ 0.22	$ 0.20
Common Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Basic Common Shares Outstanding		82,298,493	81,236,809	82,125,795	81,269,154
Incremental Common Shares Attributable to Share-based Payment Arrangements	[1]	1,338,939	1,058,425	1,394,605	1,019,488
Incremental Common Shares Attributable to Call Options and Warrants	[1]	1,104,248	1,224,705	1,137,909	1,102,415
Weighted Average Number Diluted Shares Outstanding Adjustment		2,443,187	2,283,130	2,532,514	2,121,903
Weighted Average Number of Shares Outstanding, Diluted	[1]	84,741,680	83,519,939	84,658,309	83,391,057

[1] The diluted EPS computations for the three and six months ended June 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 June 30, Six months ended June 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 options54 315 87 243Total shares excluded due to exercise price exceeding the average market price of common shares during the period54 315 87 243