Derivative Financial Instruments - Summary of Derivative Positions (Details) - Interest Rate Swap [Member]	12 Months Ended
	Dec. 31, 2015 GBP (£)	Dec. 31, 2015 USD ($)
Derivative [Line Items]
Notional amount		$ 259,218,750
Weighted Average Remaining Maturity	4 years 10 months
Sell [Member] | CAD/USD [Member]
Derivative [Line Items]
Notional amount		$ 602,926
Weighted Average Remaining Maturity	11 days
Average Exchange Rate	1.38	1.38
Sell [Member] | USD/EURO [Member]
Derivative [Line Items]
Notional amount		$ 300,000
Weighted Average Remaining Maturity	3 months
Average Exchange Rate	1.09	1.09
Sell [Member] | USD/GBP [Member]
Derivative [Line Items]
Notional amount | £	£ 1,900,000
Weighted Average Remaining Maturity	6 months
Average Exchange Rate	1.48	1.48
Sell [Member] | EURO/GBP [Member]
Derivative [Line Items]
Notional amount | £	£ 8,000,000
Weighted Average Remaining Maturity	6 months
Average Exchange Rate	0.74	0.74