CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net loss	$ (19,683)us-gaap_NetIncomeLoss	$ (14,891)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	2,853us-gaap_ShareBasedCompensation	2,375us-gaap_ShareBasedCompensation
Fair value adjustment of common stock warrants	55us-gaap_FairValueAdjustmentOfWarrants	1,163us-gaap_FairValueAdjustmentOfWarrants
Amortization of intangible assets	60us-gaap_AmortizationOfIntangibleAssets	60us-gaap_AmortizationOfIntangibleAssets
Depreciation of fixed assets	302us-gaap_Depreciation	117us-gaap_Depreciation
Amortization of debt issuance cost	302	148
Changes in assets and liabilities:
Accounts receivable	(3,395)	(898)
Inventories	4,817us-gaap_IncreaseDecreaseInInventories	(3,363)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other assets	869	384
Accounts payable	(1,305)	(3,085)
Accrued liabilities	386	338
Deferred revenue	0	287
Net cash used in operating activities	(14,739)	(17,365)
Cash flows from investing activities:
Net purchase of fixed assets	(2,045)	(187)
Change in restricted cash	70	(530)
Net cash (used in) provided by investing activities	(1,975)	(717)
Cash flows from financing activities:
Proceeds from the exercise of common stock warrants	0us-gaap_ProceedsFromWarrantExercises	1,826us-gaap_ProceedsFromWarrantExercises
Proceeds from the exercise of stock options	2,185	1,158
Debt issuance costs	0us-gaap_PaymentsOfFinancingCosts	0us-gaap_PaymentsOfFinancingCosts
Offering costs	0rptp_PaymentOfDeferredOfferingCosts	(29)rptp_PaymentOfDeferredOfferingCosts
Net cash provided by financing activities	2,185	2,955
Effect of exchange rates on cash and cash equivalents	(547)	150
Net increase in cash and cash equivalents	(15,076)	(14,977)
Cash and cash equivalents, beginning of period	149,613	83,052
Cash and Cash Equivalents, End of Period	134,537	68,075
Supplemental cash flow information:
Interest paid	2,869us-gaap_InterestPaid	2,600us-gaap_InterestPaid
Income taxes paid	120us-gaap_IncomeTaxesPaidNet	46us-gaap_IncomeTaxesPaidNet
Supplemental disclosure of non-cash financing activities:
Fair value of warrant liability reclassified to equity upon exercise	$ 0	$ 7,502

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