Accrued and other liabilities: (Tables)

12 Months Ended

Dec. 31, 2016

Accrued and other liabilities:

Schedule of accrued and other current liabilities

        Accrued and other current liabilities consist of the following (in thousands):

	December 31,
	2016		2015
Operating accruals	$	24,356	$	19,469
Deferred revenue—current portion		4,334		4,303
Payroll and benefits		4,170		3,455
Taxes—non-income based		4,037		3,347
Interest		10,252		7,781
Total	$	47,149	$	38,355