The Company - Initial Public Offering (Details)	1 Months Ended		12 Months Ended
	May. 31, 2014 USD ($) shares	Apr. 30, 2014 USD ($) $ / shares shares	Dec. 31, 2015 subsidiary shares	Dec. 31, 2014 shares
Initial Public Offering [Line Items]
Number of subsidiaries | subsidiary			4
Common stock, shares issued and sold in the IPO | shares		3,000,000	18,505,462	17,551,375
Public offering price (in dollars per share) | $ / shares		$ 16.00
Proceeds from public offering of common stock, net of underwriting discounts		$ 41,400,000
Underwriting discount and commissions		3,400,000
Shares issuance expenses		$ 3,200,000
Convertible preferred stock converted into common stock (in shares) | shares		4,003,225
Common Stock
Initial Public Offering [Line Items]
Convertible preferred stock converted into common stock (in shares) | shares				4,003,225
Common Stock | Stock options | Underwriters
Initial Public Offering [Line Items]
Common stock, shares issued and sold in the IPO | shares	81,371
Proceeds from public offering of common stock, net of underwriting discounts	$ 1,200,000
Underwriting discount and commissions	$ 91,000