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Lease and Financing Obligations | 12 Months Ended
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Dec. 31, 2017
Lease and Financing Obligations [Abstract] |
Lease and Financing Obligations | 11. Lease and Financing Obligations In 2014, the Company's subsidiary in South Korea entered into a lease agreement (the "Lease") with a third-party landlord for a new regional headquarters. As part of the Lease, the landlord agreed to renovate an existing building (the "Existing Building") and construct a new building (the "New Building") adjacent to the Existing Building. The Lease provided that when such renovations and construction were completed, the Company and the landlord would enter into a new lease agreement (the "New Lease") for the Existing Building and the New Building. In April 2015, the Company and the landlord entered into the New Lease on terms generally consistent with the 2014 lease. The New Lease term is for the period May 1, 2015 through April 30, 2025, with an option to extend the agreement for 10 years. The Company accounts for its lease of the Existing Building as an operating lease. As an inducement to enter into the Lease, the landlord agreed to make certain improvements on behalf of the Company to the Existing Building. The improvements have been accounted for by the Company as a tenant incentive. The Company has concluded that it is the deemed owner (for accounting purposes only) of the New Building during the construction period under build-to-suit lease accounting. Construction of the New Building began in June 2014 and was completed in June 2015. During the construction period, the Company recorded estimated project construction costs as a construction in progress asset in "Property and equipment, net" and a corresponding long-term liability in "Other liabilities," respectively, in its consolidated balance sheets. In addition, the amounts that the Company has paid or incurred for normal tenant improvements were also recorded to the construction-in-progress asset. At the end of the construction period in June 2015, the Company concluded that the New Lease of the New Building did not meet "sale-leaseback" criteria; therefore, the asset and obligation recognized during construction will remain recorded in the Company's consolidated balance sheets. As of December 31, 2015, the completed building and normal tenant improvements under the lease have been reclassified from construction in progress to buildings and leasehold improvements, respectively. The Company accounts for the New Lease of the New Building as a financing with the associated lease payments allocated between the New Building and the underlying parcel of land on a relative fair value basis. Rent expense attributed to the underlying parcel of land, and representing the imputed cost to lease the land, is accounted for on a straight-line basis as the land element is an operating lease. Lease payments attributed to the New Building are allocated between principal and interest expense using the effective interest method. The principal portion of the lease payment attributed to the New Building is reflected as a principal reduction of the financing obligation. In addition, the asset, which represents the total estimated cost of construction of the New Building at the end of the construction period, is being depreciated over the initial ten-year term of the New Lease to its expected residual value. At the conclusion of the New Lease, the Company will de-recognize both the net book value of the asset and the unamortized portion of the financing obligation. The amount of asset depreciation and financing obligation amortization is structured at the outset such that the remaining residual book value of the asset is equal to the remaining financing obligation at the end of the lease term. As of December 31, 2016, the Company had recognized $18.9 million as the value of the New Building offset by accumulated depreciation of $0.8 million and a financing obligation of $10.0 million, net of a $9.1 million deposit paid directly to the landlord, as part of other liabilities in its consolidated balance sheet. As of December 31, 2017, the Company had recognized $20.8 million as the value of the New Building offset by accumulated depreciation of $1.5 million and a financing obligation of $10.8 million, net of a $10.3 million deposit paid directly to the landlord, as part of other liabilities in its consolidated balance sheet. As of December 31, 2016, the tenant incentive asset and deferred tenant incentive liability associated with the Existing Building totaled $4.9 million and $4.5 million, respectively. As of December 31, 2017, the tenant incentive asset and deferred tenant incentive liability associated with the Existing Building totaled $4.9 million and $4.5 million, respectively. In addition to the lease arrangements described above, the Company leases office space and computer hardware under noncancelable long-term operating leases. Most leases include renewal options of at least three years. Minimum future operating leases and financing obligations at December 31, 2017 are as follows (U.S. dollars in thousands):
Year Ending December 31, |  | Operating Leases |  |  | Financing Obligations |
2018 |  | $ | 41,788 |  |  | $ | 736 |
2019 |  |  | 27,088 |  |  |  | 758 |
2020 |  |  | 14,907 |  |  |  | 781 |
2021 |  |  | 10,036 |  |  |  | 790 |
2022 |  |  | 7,672 |  |  |  | 804 |
Thereafter |  |  | 13,250 |  |  |  | 2,027 |
Total minimum lease payments |  | $ | 114,741 |  |  | $ | 5,896 |
Rent expense for operating leases totaled $52.4 million, $48.2 million and $50.7 million for the years ended December 31, 2015, 2016 and 2017, respectively. Interest expense associated with the financing obligations was $0.1 million, $0.2 million and $0.2 million for the years ended December 31, 2015, 2016 and 2017, respectively.

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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 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -URI http://asc.fasb.org/topic&trid=2208923 + Details
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