Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net loss	$ (37,455,000)	$ (832,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	681,000	263,000
Amortization	43,000	143,000
Stock-based compensation expense	32,902,000	215,000
Change in fair value of derivative liability	(11,000)
Deferred income tax benefit	(32,000)
Non-cash interest expense	751,000
Operating income from solar system subject to financing obligation	(135,000)	(89,000)
Other non-cash expense	461,000
Changes in operating assets and liabilities:
Accounts receivable	(979,000)	524,000
Accounts receivable, related party		62,000
Finance lease receivable	(2,159,000)
Costs and estimated earnings in excess of billings on uncompleted contracts	(11,333,000)
Restricted cash related to operating activities	(30,582,000)
Project assets	(33,424,000)
Inventories	(1,232,000)
Prepaid expenses and other assets	(25,173,000)	(373,000)
Accounts payable	13,986,000	(426,000)
Accounts payable, related party	(3,484,000)	(3,000)
Note payable	20,107,000
Advances from customers	1,261,000
Income taxes payable	1,600,000
Billings in excess of costs and estimated earnings on uncompleted contracts		(170,000)
Accrued liabilities and other liabilities	(538,000)	(8,000)
Other liabilities, related party	50,000
Net cash used in operating activities	(74,695,000)	(694,000)
Cash flows from investing activities:
Proceeds from repayment of notes receivable	837,000
Issuance of notes receivable		79,000
Acquisitions of property, plant and equipment	(394,000)
Acquisitions of project assets,	(10,749,000)
Acquisitions of new subsidiaries, net of cash acquired	251,000
Acquisition of short-term investments	(25,810,000)
Placement of bank deposit with maturity over three months	(5,323,000)
Uplift of bank deposit with maturity over three months	8,852,000
Proceeds from disposal of short-term investments	25,810,000
Net cash (used in)/generated from investing activities	(6,526,000)	79,000
Cash flows from financing activities:
Proceeds from issuance of common stocks	12,000,000
Proceeds from new short term borrowings	53,275,000
Decrease in restricted cash	80,000
Repayments of short term borrowings	(44,094,000)
Net cash generated from financing activities	21,261,000
Effect of exchange rate changes on cash	(273,000)	(144,000)
Decrease in cash and cash equivalents	(60,233,000)	(759,000)
Cash and cash equivalents at beginning of period	156,540,000	1,031,000
Cash and cash equivalents at end of period	96,307,000	272,000
Supplemental cash flow information:
Interest paid	88,000	41,000
Non-cash investing and financing activities:
Coupons issued to settle accounts payable	219,000
Common Stock Issued to Acquire New Subsidiaries [Member]
Non-cash investing and financing activities:
Common stock issued-Non cash activity	$ 8,072,000