Commitments and contingencies (Tables)
|3 Months Ended|
Mar. 31, 2017
|Commitments and Contingencies Disclosure [Abstract]|
|Schedule of Future Minimum Rental Commitments and Minimum Future Rental Income||
Future minimum rental commitments under the leases and minimum future rental income per the sublease in five years subsequent to March 31, 2017 and thereafter are as follows:
Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date.
Reference 1: http://www.xbrl.org/2003/role/presentationRef