Common Stock (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended		11 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	May. 16, 2014	May. 14, 2004
Common Stock [Line Items]
Repurchase program, amount repurchased		$ 3,795	$ 1,795
May 2014 Stock Repurchase Plan [Member]
Common Stock [Line Items]
Repurchase program, amount authorized					$ 10,000
Repurchase program, amount repurchased				$ 7,000
Repurchase program, remaining amount authorized	$ 3,000	$ 3,000
May 2004 Stock Repurchase Plan [Member]
Common Stock [Line Items]
Repurchase program, shares authorized						350,000
Voting Common Stock [Member]
Common Stock [Line Items]
Stocks granted	85,100
Executive Officer [Member] | Class A Nonvoting Common Stock [Member]
Common Stock [Line Items]
Stocks granted		160,643	125,209