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Lease Obligations | 12 Months Ended
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Dec. 31, 2014
Lease Obligations [Abstract] |
Lease Obligations | Note 12 Lease Obligations The Company leases certain of its facilities and equipment under capitalized leases and other facilities and equipment under non-cancelable operating leases. The leases are generally on a net-rent basis, under which the Company pays taxes, maintenance and insurance. Leases that expire at various dates through 2031 are expected to be renewed or replaced by leases on other properties. Rent expense for the years ended December 31, 2014, 2013 and 2012 aggregated $10,427, $6,891 and $4,968, respectively. The Company’s future minimum lease payments as of December 31, 2014 under capitalized leases and non-cancelable operating leases, with initial or remaining lease terms in excess of one year, were as follows:
(in thousands) |  | Capitalized Leases |  | Operating Leases
Years ending December 31: |  |  |  |  |  |
2015 |  | $ | 1,112 |  | $ | 10,006
2016 |  |  | 1,098 |  |  | 8,960
2017 |  |  | 1,125 |  |  | 6,649
2018 |  |  | 1,121 |  |  | 5,536
2019 |  |  | 1,117 |  |  | 4,733
Later years |  |  | 9,252 |  |  | 7,531
Total minimum lease payments |  |  | 14,825 |  | $ | 43,415
Less: amounts representing imputed interest |  |  | (5,391) |  |  |
Present value of minimum lease payments |  |  | 9,434 |  |  |
Less: current portion of capitalized lease obligations |  |  | (529) |  |  |
Capitalized lease obligations, excluding current portion |  | $ | 8,905 |  |  |
Rock Hill Facility The Company leases its headquarters and research and development facility pursuant to a lease agreement with Lex Rock Hill, LP. After its initial term ending August 31, 2021, the lease provides t he Company with the option to renew the lease for two additional five-year terms. The lease also grants the Company the right to cause Lex Rock Hill, subject to certain terms and conditions, to expand the leased premises during the term of the lease, in which case the term of the lease would be extended. The lease is a triple net lease and provides for the payment of base rent of $669 in 2014 through 2015, $683 in 2016, including a rent escalation in 2016, $709 in 2017 through 2020 and $723 in 2021. Under the terms of the lease, t he Company is obligated to pay all taxes, insurance, utilities and other operating costs with respect to the leased premises. This lease is recorded as a capitalized lease obligation under ASC 840, “Leases.” The implicit interest rate was 6.93% as of December 31, 2014 and 2013. Other Capital Lease Obligations The Company leases other equipment with lease terms through August 2018. In accordance with ASC 840, t he Company has recorded these leases as capitalized leases. The implicit interest rate ranged from 1.75% to 8.06% at December 31, 2014 and 1.75% to 7.80% at December 31, 2013.

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- Definition The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1,3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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