Condensed Consolidated Statements of Changes in Equity (Parenthetical) $ in Thousands	9 Months Ended
Sep. 30, 2015 USD ($)
Statement Of Stockholders Equity [Abstract]
Underwriters' discounts and commissions and offering costs	$ 2,228

Underwriters discount commissions and issuance cost.

No definition available.

Name:	orbc_UnderwritersDiscountCommissionsAndIssuanceCost
Namespace Prefix:	orbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration