Subsequent Event (Details)	3 Months Ended					3 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Jun. 30, 2015 Scenario, Forecast [Member] USD ($)	Apr. 24, 2015 Subsequent Event [Member] USD ($)	Apr. 24, 2015 Subsequent Event [Member] JPY (¥)	Mar. 31, 2015 New Loan Agreement [Member] DVB Bank SE [Member]	Apr. 24, 2015 New Loan Agreement [Member] DVB Bank SE [Member] Subsequent Event [Member] USD ($)
Subsequent Event [Line Items]
Term loan facility principal amount							$ 32,000,000
Amount of outstanding Yen facility paid off				28,100,000	2,900,000,000
Amount of Yen denominated interest rate swap settled				2,900,000
Fixed rate (in hundredths)							4.16%
Term for principal to be paid quarterly						5 years
Amortization period						10 years
Final quarterly balloon payment							16,800,000
Derivative Loss	2,810,000	14,000
Possible additional derivative losses			$ 500,000