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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2016
Fair Value Disclosures [Abstract]  
Schedule of Company's Financial Assets and (Liabilities) at Fair Value on Recurring Basis
The following table summarizes the basis used to measure the Company’s financial assets (liabilities) at fair value on a recurring basis in the balance sheets at December 31, 2016 and 2015:
 
 
Basis of Fair Value Measurements
 
Balance at December 31, 2016
 
Level 1
 
Level 2
 
Level 3
 
(In thousands)
Available for sale securities
$
5,369

 
$
5,369

 
$
—

 
$
—

 
 
Basis of Fair Value Measurements
 
Balance at December 31, 2015
 
Level 1
 
Level 2
 
Level 3
 
(In thousands)
Money market investments
$
21,931

 
$
21,931

 
$
—

 
$
—

Available for sale securities
4,794

 
4,794

 
—

 
—

Contingent consideration
(4,705
)
 
—

 
—

 
(4,705
)