Other Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Components of Other Intangible Assets
The components of other intangible assets are as follows (in thousands):
 
September 30, 2016
 
December 31, 2015
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Book Value
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Book Value
Contractual relationships, net
$
2,039

 
$
(1,388
)
 
$
651

 
$
1,933

 
$
(1,000
)
 
$
933

Total intangible assets
$
2,039

 
$
(1,388
)
 
$
651

 
$
1,933

 
$
(1,000
)
 
$
933
Amortization Expense Expected for Next Five Years
Amortization expense expected for the next five years and thereafter is as follows (in thousands):
Years Ending December 31,
Contractual Relationships
2016 (remaining)
$
111

2017
185

2018
158

2019
132

2020
65

Thereafter
—

     Total
$
651