Stockholders' Equity	12 Months Ended
Dec. 31, 2018
Equity [Abstract]
Stockholders' Equity	Note 11. Stockholders’ Equity Preferred Stock The Company currently has 50,000,000 shares of preferred stock authorized. Series A Convertible Preferred Stock The Company currently has 1,000,000 shares of Series A convertible preferred stock authorized. As part of the purchase price for the acquisition of StarTrak Systems LLC in 2011, the Company issued 183,550 shares of Series A convertible preferred stock, of which 39,442 shares remain outstanding as of December 31, 2018. Key terms of the Series A convertible preferred stock are as follows: Dividends Holders of the Series A convertible preferred stock are entitled to receive a cumulative 4% dividend annually (calculated on the basis of the redemption price of $10.00 per share) payable quarterly in additional shares of the Series A convertible preferred stock. During the years ended December 31, 2018 and 2017, the Company issued dividends in the amounts of 1,898 and 1,078 shares to the holders of the Series A convertible preferred stock, respectively. There were no dividends in arrears as of December 31, 2018. Conversion Shares of the Series A convertible preferred stock are convertible into 1.66611 shares of common stock: (i) at the option of the holder at any time or (ii) at the option of the Company beginning six months from the issuance date and if the average closing market price for the Company’s common stock for the preceding twenty consecutive trading days equals or exceeds $11.20 per share. Voting Each share of the Series A convertible preferred stock is entitled to one vote for each share of common stock into which the preferred stock is convertible. Liquidation In the event of any liquidation, sale or merger of the Company, the holders of the Series A convertible preferred stock are entitled to receive prior to and in preference over the holders of the common stock an amount equal to $10.00 per share plus unpaid dividends. Redemption The Series A convertible preferred stock may be redeemed by the Company for an amount equal to the issuance price of $10.00 per share plus all unpaid dividends at any time after two years from the issuance date. Common Stock At December 31, 2018, the Company had reserved 15,933,782 shares of common stock for future issuances related to employee stock compensation plans. On April 10, 2018, the Company completed a public offering of 3,450,000 shares of its common stock, including 450,000 shares sold upon exercise in full of the underwriters’ option to purchase additional shares, at a price of $8.60 per share. The Company received net proceeds of approximately $28,000 after deducting underwriters’ discounts and commissions and offering costs. On April 13, 2018, the Company filed a shelf registration statement with the SEC, registering an unspecified amount of debt and/or equity securities that the Company may offer in one or more offerings on terms to be determined at the time of sale. The shelf registration statement was automatically effective upon filing and superseded and replaced the Company’s previous shelf registration statement declared effective on April 14, 2015, which was due to expire on April 14, 2018. On June 15, 2017, the Company completed a private placement of 1,552,795 shares of the Company’s common stock at a purchase price of $9.66 per share, for an aggregate purchase price of $15,000. The per share price of $9.66 was calculated as 95% of the volume-weighted average trading price of the Company’s common stock for the 30 trading days ended on June 14, 2017.

Stockholders' Equity

12 Months Ended

Dec. 31, 2018

Note 11. Stockholders’ Equity

Preferred Stock

The Company currently has 50,000,000 shares of preferred stock authorized.

Series A Convertible Preferred Stock

The Company currently has 1,000,000 shares of Series A convertible preferred stock authorized. As part of the purchase price for the acquisition of StarTrak Systems LLC in 2011, the Company issued 183,550 shares of Series A convertible preferred stock, of which 39,442 shares remain outstanding as of December 31, 2018.

Key terms of the Series A convertible preferred stock are as follows:

Dividends

Holders of the Series A convertible preferred stock are entitled to receive a cumulative 4% dividend annually (calculated on the basis of the redemption price of $10.00 per share) payable quarterly in additional shares of the Series A convertible preferred stock. During the years ended December 31, 2018 and 2017, the Company issued dividends in the amounts of 1,898 and 1,078 shares to the holders of the Series A convertible preferred stock, respectively. There were no dividends in arrears as of December 31, 2018.

Conversion

Shares of the Series A convertible preferred stock are convertible into 1.66611 shares of common stock: (i) at the option of the holder at any time or (ii) at the option of the Company beginning six months from the issuance date and if the average closing market price for the Company’s common stock for the preceding twenty consecutive trading days equals or exceeds $11.20 per share.

Voting

Each share of the Series A convertible preferred stock is entitled to one vote for each share of common stock into which the preferred stock is convertible.

Liquidation

In the event of any liquidation, sale or merger of the Company, the holders of the Series A convertible preferred stock are entitled to receive prior to and in preference over the holders of the common stock an amount equal to $10.00 per share plus unpaid dividends.

Redemption

The Series A convertible preferred stock may be redeemed by the Company for an amount equal to the issuance price of $10.00 per share plus all unpaid dividends at any time after two years from the issuance date.

Common Stock

At December 31, 2018, the Company had reserved 15,933,782 shares of common stock for future issuances related to employee stock compensation plans.

On April 10, 2018, the Company completed a public offering of 3,450,000 shares of its common stock, including 450,000 shares sold upon exercise in full of the underwriters’ option to purchase additional shares, at a price of $8.60 per share. The Company received net proceeds of approximately $28,000 after deducting underwriters’ discounts and commissions and offering costs.

On April 13, 2018, the Company filed a shelf registration statement with the SEC, registering an unspecified amount of debt and/or equity securities that the Company may offer in one or more offerings on terms to be determined at the time of sale. The shelf registration statement was automatically effective upon filing and superseded and replaced the Company’s previous shelf registration statement declared effective on April 14, 2015, which was due to expire on April 14, 2018.

On June 15, 2017, the Company completed a private placement of 1,552,795 shares of the Company’s common stock at a purchase price of $9.66 per share, for an aggregate purchase price of $15,000. The per share price of $9.66 was calculated as 95% of the volume-weighted average trading price of the Company’s common stock for the 30 trading days ended on June 14, 2017.