3. Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities at fair value

	As of June 30, 2015								As of December 31, 2014
	(Level 1)		(Level 2)		(Level 3)		Total		(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Cash and cash equivalents	$	28,412	$	–	$	–	$	28,412	$	32,175	$	–	$	–	$	32,175
Restricted cash		2,495		–		–		2,495		509		–		–		509
Short term investments		8,324		–		–		8,324		8,189		–		–		8,189
Notes receivable		–		–		–		–		–		980		–		980
Cash restricted for construction in progress		5,089		–		–		5,089		–		–		–		–
Total assets	$	44,320	$	–	$	–	$	44,320	$	40,873	$	980	$	–	$	41,853
Liabilities:
Bank acceptance payable		–		2,660		–		2,660		–		1,271		–		1,271
Total liabilities	$	–	$	2,660	$	–	$	2,660	$	–	$	1,271	$	–	$	1,271