Stockholders' Equity - Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Mar. 01, 2017	Mar. 31, 2017	Sep. 30, 2016	Mar. 31, 2016	May 11, 2016
Dividends, Common Stock [Abstract]
Dividends paid on common stock		$ 2,527	$ 2,527
Cash dividend paid per common share		$ 0.045
Cash dividends declared per common share	$ 0.045	$ 0.045		$ 0.045
Repurchase Program
Maximum value of shares authorized for repurchase under repurchase plan					$ 20,000
Maximum number of shares authorized for repurchase under repurchase program					2,827,105
Shares repurchased and retired (in shares)		0
Value of remaining shares available under repurchase authorization		$ 13,992
Maximum remaining number of shares available under repurchase authorization		1,387,683
Accrued expenses
Dividends, Common Stock [Abstract]
Accrued dividend		$ 2,500