Common Stock Purchase Programs	12 Months Ended
Dec. 31, 2015
Common Stock Repurchase Programs [Abstract]
Common Stock Purchase Program [Text Block]	COMMON STOCK REPURCHASE PROGRAMS In March 2013, our Board of Directors approved a new stock repurchase program (the "2013 Repurchase Program") which authorized the repurchase of up to $30.0 million of our common stock. This 2013 Repurchase Program replaced the previously existing share repurchase program. Shares repurchased under the 2013 Repurchase Program totaled 1,510,759 at a cost of $30.0 million, including 1,089,560 shares repurchased at a cost of $21.8 million in 2014. Accordingly, no additional shares may be repurchased under the 2013 Repurchase Program. All repurchased shares described above were canceled and retired. In October 2014, our Board of Directors approved a new stock repurchase program (the "2014 Repurchase Program") which authorized the repurchase of up to $30.0 million of our common stock. Under the 2014 Repurchase Program, we repurchased common stock from time to time on the open market or in private transactions. Shares repurchased under the 2014 Repurchase Program totaled 1,056,954 shares at a cost of $19.6 million, all of which was repurchased during 2015. The 2014 Repurchase Program was completed in January 2016, with purchases since December 31, 2015 of 585,970 shares for a cost of $10.3 million. The repurchased shares described above were either canceled and retired or added to treasury stock after the reincorporation in Delaware in 2015. In January of 2016, our Board of Directors approved a new stock repurchase program (the “2016 Repurchase Program”), authorizing the repurchase of up to $50.0 million of common stock. Under the 2016 Repurchase Program, we may repurchase common stock from time to time on the open market or in private transactions. The timing and extent of the repurchases under the 2016 Repurchase Program will depend upon market conditions and other corporate considerations in our sole discretion.

COMMON STOCK REPURCHASE PROGRAMS

In March 2013, our Board of Directors approved a new stock repurchase program (the "2013 Repurchase Program") which authorized the repurchase of up to $30.0 million of our common stock. This 2013 Repurchase Program replaced the previously existing share repurchase program. Shares repurchased under the 2013 Repurchase Program totaled 1,510,759 at a cost of $30.0 million, including 1,089,560 shares repurchased at a cost of $21.8 million in 2014. Accordingly, no additional shares may be repurchased under the 2013 Repurchase Program. All repurchased shares described above were canceled and retired.

In October 2014, our Board of Directors approved a new stock repurchase program (the "2014 Repurchase Program") which authorized the repurchase of up to $30.0 million of our common stock. Under the 2014 Repurchase Program, we repurchased common stock from time to time on the open market or in private transactions. Shares repurchased under the 2014 Repurchase Program totaled 1,056,954 shares at a cost of $19.6 million, all of which was repurchased during 2015. The 2014 Repurchase Program was completed in January 2016, with purchases since December 31, 2015 of 585,970 shares for a cost of $10.3 million. The repurchased shares described above were either canceled and retired or added to treasury stock after the reincorporation in Delaware in 2015.

In January of 2016, our Board of Directors approved a new stock repurchase program (the “2016 Repurchase Program”), authorizing the repurchase of up to $50.0 million of common stock. Under the 2016 Repurchase Program, we may repurchase common stock from time to time on the open market or in private transactions. The timing and extent of the repurchases under the 2016 Repurchase Program will depend upon market conditions and other corporate considerations in our sole discretion.