Subsequent Events (Details) - Subsequent event - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	9 Months Ended
	Oct. 27, 2015	Sep. 30, 2015
Subsequent events:
Dividend declared (in dollars per share)	$ 1.3
Dividend declared, date		Oct. 27, 2015
Dividend payable, date		Dec. 10, 2015
Shareholders of record, date		Nov. 10, 2015
Additional funds for use in the company's stock repurchase program	$ 4,000