Current and Long- Term Liabilities

3 Months Ended

Mar. 31, 2017

CURRENT AND LONG-TERM LIABILITIES

Accrued Expenses

Accrued expenses consisted of the following as of March 31, 2017 and December 31, 2016 (in thousands):



	March 31, 2017		December 31, 2016
Commercial rebates, fees and returns	$	96,280	$	89,466
Professional, license, and other fees and expenses	24,630		24,248
Research and development expenses	9,901		10,714
Interest expense	5,507		16,683
Salaries, bonuses, and other compensation	11,161		14,823
Restructuring expense	—		74
Total accrued expenses	$	147,479	$	156,008

Deferred Revenues

Our deferred revenue balances as of March 31, 2017 and December 31, 2016 were related to our CBR Services revenues and included: (a) amounts collected in advance of unit processing and (b) amounts associated with unearned storage fees collected at the beginning of the storage contract term, net of allocated discounts.