Subsequent Event	3 Months Ended
Mar. 31, 2014
Subsequent Events [Abstract]
Subsequent Events [Text Block]	15. Subsequent Event On April 1, 2014, the Company entered into a placement agent agreement with Roth Capital Partners, LLC and Craig-Hallum Capital Group LLC related to a registered direct offering of an aggregate of 2,030,000 shares of the Company’s common stock and warrants to purchase an aggregate of 812,000 shares of Company common stock. The shares of common stock and warrants were sold in units at $3.40 per unit, with each unit consisting of one share of common stock and 0.4 of one warrant to purchase one share of common stock at an exercise price of $4.20 per share. The warrants can be exercised during the period commencing after six months and ending five and a half years from the date of issuance. The offering closed on April 4, 2014 and the Company received gross proceeds of $6.9 million and net proceeds of approximately $6.1 million after deducting placement agent fees and other estimated offering expenses. The Company intends to use the proceeds for general corporate purposes, which may include working capital, general and administrative expenses, capital expenditures and implementation of its strategic priorities. The Company may also use a portion of the net proceeds to acquire or invest in businesses, products and technologies that are complementary to its current business, although there are no present commitments or agreements for any such transactions.

Subsequent Event

3 Months Ended

Mar. 31, 2014

15. Subsequent Event

On April 1, 2014, the Company entered into a placement agent agreement with Roth Capital Partners, LLC and Craig-Hallum Capital Group LLC related to a registered direct offering of an aggregate of 2,030,000 shares of the Company’s common stock and warrants to purchase an aggregate of 812,000 shares of Company common stock. The shares of common stock and warrants were sold in units at $3.40 per unit, with each unit consisting of one share of common stock and 0.4 of one warrant to purchase one share of common stock at an exercise price of $4.20 per share. The warrants can be exercised during the period commencing after six months and ending five and a half years from the date of issuance. The offering closed on April 4, 2014 and the Company received gross proceeds of $6.9 million and net proceeds of approximately $6.1 million after deducting placement agent fees and other estimated offering expenses. The Company intends to use the proceeds for general corporate purposes, which may include working capital, general and administrative expenses, capital expenditures and implementation of its strategic priorities. The Company may also use a portion of the net proceeds to acquire or invest in businesses, products and technologies that are complementary to its current business, although there are no present commitments or agreements for any such transactions.