Stockholders' Equity	12 Months Ended
Dec. 31, 2018
Equity [Abstract]
Stockholders’ Equity	NOTE K – Stockholders’ Equity Common Stock Issued In connection with the acquisition of CovalentWorks (see Note B), we issued 40,478 shares of SPS common stock as calculated according to the terms of the purchase agreement. The fair value of the shares we issued of approximately $3.4 million was determined using the closing price of our common stock on December 18, 2018, the closing date of the transaction. Stock Repurchase Program On November 2, 2017, our board of directors authorized a program to repurchase up to $50.0 million of common stock. Under the program, purchases may be made from time to time in the open market over two years. The number of shares to be purchased and the timing of purchases will be based on the price of our common stock, general business and market conditions and other investment considerations and factors. The program does not obligate us to repurchase any specific number of shares and may be suspended or discontinued at any time without prior notice. We intend to finance the share repurchase program with cash on hand. We repurchased 289,745 shares at a cost of $19.9 million and 122,147 shares at a cost of $5.8 million for the years ended December 31, 2018 and December 31, 2017, respectively. Of the $50.0 million share repurchases authorized, $24.3 million was available for future share repurchases at December 31, 2018.

Stockholders' Equity

12 Months Ended

Dec. 31, 2018

NOTE K – Stockholders’ Equity

Common Stock Issued

In connection with the acquisition of CovalentWorks (see Note B), we issued 40,478 shares of SPS common stock as calculated according to the terms of the purchase agreement. The fair value of the shares we issued of approximately $3.4 million was determined using the closing price of our common stock on December 18, 2018, the closing date of the transaction.

Stock Repurchase Program

On November 2, 2017, our board of directors authorized a program to repurchase up to $50.0 million of common stock. Under the program, purchases may be made from time to time in the open market over two years. The number of shares to be purchased and the timing of purchases will be based on the price of our common stock, general business and market conditions and other investment considerations and factors.

The program does not obligate us to repurchase any specific number of shares and may be suspended or discontinued at any time without prior notice. We intend to finance the share repurchase program with cash on hand.

We repurchased 289,745 shares at a cost of $19.9 million and 122,147 shares at a cost of $5.8 million for the years ended December 31, 2018 and December 31, 2017, respectively. Of the $50.0 million share repurchases authorized, $24.3 million was available for future share repurchases at December 31, 2018.