The table below contains data on Fincorp Inc. The balance sheet items correspond to values at year-end of 2013 and 2014, while the income statement items correspond to revenues or expenses during the year ending in either 2013 or 2014. All values are in thousands of dollars. Revenue Cost of goods sold Depreciation Inventories Administrative expenses Interest expense Federal and state taxes* Accounts payable Accounts receivable Net fixed assetst Long-term debt Notes payable Dividends paid Cash and marketable securities 2013 2014 $4,000 $4,100 1,600 1,700 500 520 300 350 500 550 150 150 400 420 300 350 400 450 5,000 5,800 2,000 2,400 1,000 600 410 410 800 300 * Taxes are paid in their entirety in the year that the tax obligation is incurred. t Net fixed assets are fixed assets net of accumulated depreciation since the asset was installed. What was the change in net working capital during the year? (Enter your answer in thousands of dollars. Negative amount should be indicated by a minus sign.) Change in net working capital thousand