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Property and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2017
Property Plant And Equipment [Abstract]  
Summary of Property and Equipment

Property and equipment consisted of the following at December 31, 2017 and 2016 (in thousands):

 

 

 

2017

 

 

2016

 

 

Estimated Useful

Lives in Years

 

Equipment

 

$

33,711

 

 

$

29,220

 

 

3-7

 

Leasehold improvements

 

 

14,517

 

 

 

10,550

 

 

2-5

 

Furniture and fixtures

 

 

4,486

 

 

 

4,315

 

 

 

7

 

Computer hardware and office equipment

 

 

10,038

 

 

 

8,268

 

 

 

3

 

Computer software

 

 

10,331

 

 

 

5,346

 

 

3-5

 

Assets not yet placed in service

 

 

3,951

 

 

 

3,439

 

 

 

 

Subtotal

 

 

77,034

 

 

 

61,138

 

 

 

 

 

Less: accumulated depreciation and amortization

 

 

(40,530

)

 

 

(27,102

)

 

 

 

 

Property and equipment, net

 

$

36,504

 

 

$

34,036

 

 

 

 

 

 

Depreciation Expense on Property and Equipment, Including Leased Assets

Depreciation and amortization expense on property and equipment, including leased assets in each period was as follows (in thousands): 

 

 

For the years ended December 31,

 

 

 

2017

 

 

2016

 

 

2015

 

Depreciation and amortization expense

 

$

15,596

 

 

$

15,937

 

 

$

6,730

 

 

Property and Equipment under Capital Leases

Property and equipment under capital leases, included above, consists of the following at December 31, 2017 and 2016 (in thousands):

 

 

 

2017

 

 

2016

 

Equipment

 

$

10,619

 

 

$

13,109

 

Furniture and fixtures

 

 

1,012

 

 

 

1,081

 

Computer hardware

 

 

4,310

 

 

 

5,178

 

Computer software

 

 

607

 

 

 

514

 

Leasehold improvements

 

 

1,485

 

 

 

69

 

Subtotal

 

 

18,033

 

 

 

19,951

 

Less: accumulated depreciation and amortization

 

 

(7,560

)

 

 

(9,481

)

Property and equipment under capital leases, net

 

$

10,473

 

 

$

10,470