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Inventories - Losses on Valuation of Inventory (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Losses incurred on valuation of inventory and write-off of obsolete inventory	$ 996	$ 1,235

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- Definition

Loss On Inventory Valuation With Obsolete Inventory Write Off

+ References

No definition available.

+ Details

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Namespace Prefix:	clro_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

Name:	us-gaap_InventoryDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration