Derivative Financial Instruments - Summary of Derivative Positions (Details) - Jun. 30, 2015	USD ($)	GBP (£)
Interest Rate Swaps [Member]
Derivative [Line Items]
Notional Amount	$ 153,125,000
Weighted Average Remaining Maturity In Years	1 year 1 month
Sell [Member] | Canadian Dollar/USD [Member]
Derivative [Line Items]
Notional Amount	$ 1,326,671
Weighted Average Remaining Maturity In Years	1 month
Average Exchange Rate	1.25	1.25
Sell [Member] | Singapore Dollar/USD [Member]
Derivative [Line Items]
Notional Amount	$ 2,453,418
Weighted Average Remaining Maturity In Years	1 year 3 months 6 days
Average Exchange Rate	1.11	1.11
Sell [Member] | Australian Dollar/USD [Member]
Derivative [Line Items]
Notional Amount	$ 2,519,436
Weighted Average Remaining Maturity In Years	6 months
Average Exchange Rate	0.76	0.76
Sell [Member] | USD/British Pound [Member]
Derivative [Line Items]
Notional Amount | £		£ 1,900,000
Weighted Average Remaining Maturity In Years	6 months
Average Exchange Rate	1.57	1.57
Sell [Member] | EURO/British Pound [Member]
Derivative [Line Items]
Notional Amount | £		£ 8,000,000
Weighted Average Remaining Maturity In Years	6 months
Average Exchange Rate	0.71	0.71