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Capitalized Software Development Costs (Tables)
 9 Months Ended
Sep. 30, 2017
Research And Development [Abstract]  
Summary of Capitalized Software Development Costs, Exclusive of those Recorded within Property and Equipment

Capitalized software development costs, exclusive of those recorded within property and equipment, consisted of the following:

 

 

 

September 30, 2017

 

 

December 31, 2016

 

 

 

(in thousands)

 

Gross capitalized software development costs

 

$

31,433

 

 

$

25,152

 

Accumulated amortization

 

 

(22,867

)

 

 

(18,629

)

Capitalized software development costs, net

 

$

8,566

 

 

$

6,523

 

 
Summary of Capitalized Software Development Costs Including Stock-Based Compensation and Amortization

 

The following table summarizes software development costs capitalized, stock-based compensation included in capitalized software development costs, and amortization of capitalized software development costs.

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2017

 

 

2016

 

 

2017

 

 

2016

 

 

 

(in thousands)

 

 

(in thousands)

 

Software development costs capitalized

 

$

2,380

 

 

$

1,988

 

 

$

6,281

 

 

$

4,588

 

Stock-based compensation included in capitalized software development costs

 

$

414

 

 

$

326

 

 

$

1,237

 

 

$

832

 

Amortization of software development costs

 

$

1,545

 

 

$

1,143

 

 

$

4,391

 

 

$

3,822