Debt and obligations under capital lease Future minimum lease payments under capital leases (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Debt Disclosure [Abstract]
2014	$ 14
Minimum lease payments	14
Less: Amount of interest contained in above payments	0
Present value of minimum lease payments	$ 14

Amount of minimum lease payments for capital leases.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

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- Definition

Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.

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- Definition

Amount necessary to reduce net minimum lease payments to present value for capital leases.

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- Definition

Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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