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Tender Offer (Details) - USD ($)	1 Months Ended
	Mar. 19, 2015	Mar. 17, 2015	Jun. 30, 2015	Mar. 31, 2015
Tender Offer [Line Items]
Common stock, shares outstanding			7,708,281	7,701,981
Dutch auction
Tender Offer [Line Items]
Number of shares offered in tender	4,700,000
Total payments for common shares including costs	$ 70,459,000
Percentage of number of common shares purchased		38.00%
Common stock, shares outstanding	7,701,981

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The cash outflow to reacquire common stock during the period.

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