Stockholders Equity Dividend (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended
	Jun. 30, 2016	Jun. 10, 2016	May. 19, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015
Dividends Payable [Line Items]
Dividends payable, date declared				Mar. 03, 2016	Nov. 19, 2015	Aug. 20, 2015	May 22, 2015	Feb. 26, 2015
Dividends payable, date of record				Mar. 10, 2016	Dec. 15, 2015	Sep. 10, 2015	Jun. 10, 2015	Mar. 10, 2015
Dividends payable, date to be paid				Mar. 31, 2016	Jan. 04, 2016	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015
Cash dividends declared per common share				$ 0.055	$ 0.055	$ 0.055	$ 0.055	$ 0.055
Payments of dividends				$ 5,880	$ 6,326	$ 6,491	$ 6,389	$ 6,383
Subsequent Event [Member]
Dividends Payable [Line Items]
Dividends payable, date declared			May 19, 2016
Dividends payable, date of record		Jun. 10, 2016
Dividends payable, date to be paid	Jun. 30, 2016
Cash dividends declared per common share			$ 0.055