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Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2017
Fair Value Disclosures [Abstract]  
Schedule of assets and liabilities measured at fair value on recurring basis
The following tables present financial assets and liabilities at March 31, 2017 and December 31, 2016 for which the Company measures fair value on a recurring basis, by level, within the fair value hierarchy:
March 31, 2017
Total
 
Level 1
 
Level 2
 
Level 3
 
Valuation
Technique
Assets
 
 
 
 
 
 
 
 
 
Money market mutual funds
$
14,233

 
$
14,233

 
$
—

 
$
—

 
(a)
Certificates of deposit
2,510

 
2,510

 
—

 
—

 
(a)
Liabilities
 
 
 
 
 
 
 
 
 
Interest rate swaps
131

 
—

 
131

 
—

 
(b)
December 31, 2016
Total
 
Level 1
 
Level 2
 
Level 3
 
Valuation
Technique
Assets
 
 
 
 
 
 
 
 
 
Money market mutual funds
$
21,848

 
$
21,848

 
$
—

 
$
—

 
(a)
Certificates of deposit
3,864

 
3,864

 
—

 
—

 
(a)
Liabilities
 
 
 
 
 
 
 
 
 
Interest rate swaps
158

 
—

 
158

 
—

 
(b)