Income Taxes - Significant Components of the Company’s Deferred Taxes (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Inventory	$ 729us-gaap_DeferredTaxAssetsInventory	$ 1,649us-gaap_DeferredTaxAssetsInventory
Reserves and allowances	410	296
Other	392ldrh_DeferredTaxAssetsOtherCurrent	5ldrh_DeferredTaxAssetsOtherCurrent
Valuation allowance	(1,003)	(1,383)
Total current deferred tax assets	528us-gaap_DeferredTaxAssetsNetCurrent	567us-gaap_DeferredTaxAssetsNetCurrent
Net operating loss and tax credits carryforwards	27,395	24,311
Amortization	154	149
Other	2,842ldrh_DeferredTaxAssetsOtherNoncurrent	749ldrh_DeferredTaxAssetsOtherNoncurrent
Valuation allowance	(28,731)	(23,942)
Total noncurrent deferred tax assets	1,660us-gaap_DeferredTaxAssetsNetNoncurrent	1,267us-gaap_DeferredTaxAssetsNetNoncurrent
Deferred tax liabilities:
Prepaid and other	232	1,107
Total current deferred tax liabilities	232	1,107
Depreciation	2,208	754
Total noncurrent deferred tax liabilities	$ 2,208	$ 754

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

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Gross amount of noncurrent deferred tax liabilities, which result from applying the applicable tax rate to taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax.

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