Bank Borrowings - Amendment No. 2 (Details) - Amendment Number Two	Jan. 27, 2017
LIBOR
Bank Borrowings
Debt instrument variable rate basis	LIBOR
LIBOR | Minimum
Bank Borrowings
Debt instrument variable rate	5.50%
LIBOR | Maximum
Bank Borrowings
Debt instrument variable rate	7.00%
Base Rate
Bank Borrowings
Debt instrument variable rate basis	Base Rate
Debt instrument variable rate, percent below LIBOR variable rate	1.00%