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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2014
Goodwill and Other Intangible Assets |
Summary of Intangible Assets |
|  | As of December 31, 2014 |
($ in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount |
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |
Customer lists/relationships |  | $ | 51,804 |  | $ | (24,415 | ) | $ | 27,389 |
Patents |  |  | 10,319 |  |  | (10,319 | ) |  | — |
Other intangibles |  |  | 12,270 |  |  | (3,757 | ) |  | 8,513 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other intangible assets, net |  | $ | 74,393 |  | $ | (38,491 | ) | $ | 35,902 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization expense for the year ended December 31, 2014 |  |  |  |  | $ | 4,190 |  |  |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | As of December 31, 2013 |
($ in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount |
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |
Customer lists/relationships |  | $ | 51,804 |  | $ | (21,490 | ) | $ | 30,314 |
Patents |  |  | 10,319 |  |  | (10,319 | ) |  | — |
Other intangibles |  |  | 12,270 |  |  | (2,492 | ) |  | 9,778 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other intangible assets, net |  | $ | 74,393 |  | $ | (34,301 | ) | $ | 40,092 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization expense for the year ended December 31, 2013 |  |  |  |  | $ | 5,002 |  |  |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization expense for the year ended December 31, 2012 |  |  |  |  | $ | 2,118 |  |  |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Summary of Amortization Expense |
($ in thousands) |  | Amortization expense |
2015 |  | $ | 3,949 |
2016 |  |  | 3,647 |
2017 |  |  | 3,569 |
2018 |  |  | 3,484 |
2019 |  |  | 3,475 |
Thereafter |  |  | 17,778 |
​ | ​ | ​ | ​ | ​
Total amortization expense |  | $ | 35,902 |
​ | ​ | ​ | ​ | ​
Summary of Reconciliation of Goodwill |
($ in thousands) |  | Total |
Goodwill as of December 31, 2012 |  | $ | 32,547 |
2013 reduction — sale of EMS business |  |  | (500 | )
​ | ​ | ​ | ​ | ​
Goodwill as of December 31, 2013 |  |  | 32,047 |
Impairment charge |  |  | — |
​ | ​ | ​ | ​ | ​
Goodwill as of December 31, 2014 |  | $ | 32,047 |
​ | ​ | ​ | ​ | ​

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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