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Inventories (Tables) | 6 Months Ended
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Jun. 30, 2016
Inventory Disclosure [Abstract] |
Inventories |
| June 30, 2016 |  | December 31, 2015
| (in thousands)
Raw materials | $ | 36,442 |  |  | $ | 33,853 |
Work in process | 2,417 |  |  | 2,522 |
Finished goods | 2,331 |  |  | 2,881 |
| 41,190 |  |  | 39,256 |
Less: Allowance for excess and obsolete inventories | (1,065 | ) |  | (757 | )
Total, net | $ | 40,125 |  |  | $ | 38,499 |
Inventories (Allowance) | The related changes in the allowance for excess and obsolete inventories account are as follows:
| Three months ended |  | Six months ended
| June 30, 2016 |  | June 30, 2015 |  | June 30, 2016 |  | June 30, 2015
Allowance for excess and obsolete inventories: | (in thousands)
Balance, beginning of period | $ | 894 |  |  | $ | 755 |  |  | $ | 757 |  |  | $ | 714 |
Provisions for excess and obsolete inventories | 171 |  |  | 18 |  |  | 308 |  |  | 59 |
Inventories written off | — |  |  | — |  |  | — |  |  | — |
Balance, end of period | $ | 1,065 |  |  | $ | 773 |  |  | $ | 1,065 |  |  | $ | 773 |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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