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Shareholders' Equity - Summary of dividends declared (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Mar. 31, 2016
USD ($)
$ / shares
Declaration Date May 4, 2015  
Stockholders Equity Note [Line Items]  
Declaration Date May 04, 2015
Per Share Dividend | $ / shares $ 0.18
Record Date May 01, 2015
Total Amount (In thousands) | $ $ 3,647
Payment Date May 22, 2015
Declaration Date July 20, 2015  
Stockholders Equity Note [Line Items]  
Declaration Date Jul. 20, 2015
Per Share Dividend | $ / shares $ 0.18
Record Date Aug. 03, 2015
Total Amount (In thousands) | $ $ 3,660
Payment Date Aug. 14, 2015
Declaration Date October 19, 2015  
Stockholders Equity Note [Line Items]  
Declaration Date Oct. 19, 2015
Per Share Dividend | $ / shares $ 0.18
Record Date Nov. 02, 2015
Total Amount (In thousands) | $ $ 3,660
Payment Date Nov. 13, 2015
Declaration Date January 25, 2016  
Stockholders Equity Note [Line Items]  
Declaration Date Jan. 25, 2016
Per Share Dividend | $ / shares $ 0.18
Record Date Feb. 08, 2016
Total Amount (In thousands) | $ $ 3,659
Payment Date Feb. 19, 2016