Debt Facilities - Bridge Term Loan (Details) - Bridge term loan [Member] $ in Thousands			1 Months Ended				10 Months Ended
	Sep. 01, 2016	Sep. 30, 2015 JPY (¥)	Dec. 31, 2015 JPY (¥)	Dec. 31, 2015 USD ($)	Oct. 31, 2015 JPY (¥)	Oct. 31, 2015 USD ($)	Aug. 31, 2016	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)
Debt Instrument [Line Items]
Maximum borrowing capacity		¥ 47,500,000,000							$ 395,200
Proceeds from issuance of debt			¥ 19,200,000,000	$ 159,744	¥ 27,260,000,000	$ 226,803
Short-term debt			¥ 46,460,000,000					$ 386,547
Debt term (in years)		1 year
Initial payment period (in months)		10 months
Tokyo Interbank Offered Rate [Member] | Forecast [Member]
Debt Instrument [Line Items]
Variable rate (percent)	1.75%						0.40%