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Share Repurchase Program (Details) - Common Stock [Member]
3 Months Ended
Jun. 30, 2017
USD ($)
shares
Equity, Class of Treasury Stock [Line Items]  
Stock repurchase program, approved amount $ 15,000,000
Shares utilized, amount 4,358,000
Shares available for repurchase, amount $ 10,642,000
Shares repurchased and retired (in shares) | shares 69,261