Derivative Instruments (Interest Rate Derivatives) (Details)		9 Months Ended
	Dec. 31, 2013 JPY (¥)	Sep. 30, 2014 Swap 3 [Member] USD ($)		Sep. 30, 2014 Swap 3 [Member] JPY (¥)
Derivative [Line Items]
Effective Date		Mar. 15, 2009		Mar. 15, 2009
Termination Date		Sep. 15, 2020		Sep. 15, 2020
Derivatives, current notional amount	¥ 3,300,000,000	$ 42,000,000	[1]
Swap Rate (in thousandths)		2.065%		2.065%
Type		Variable-to-Fixed		Variable-to-Fixed
Exchange rate	102.53			109.65

[1] Notional amount converted from Yen at September 30, 2014 at a Yen to USD exchange rate of 109.65.