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CONSOLIDATED STATEMENT OF EQUITY (DEFICIT) - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings / Accumulated Deficit [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Total Radnet, Inc. Stockholders (Deficit) Equity [Member] | Noncontrolling Interest [Member] | Total
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance, shares at Dec. 31, 2012 | 38,540,482 |  |  |  |  |  |
Beginning balance, value at Dec. 31, 2012 | $ 4 | $ 168,415 | $ (175,776) | $ 39 | $ (7,318) | $ 634 | $ (6,684)
Issuance of common stock upon exercise of options/warrants, shares | 898,714 |  |  |  |  |  |
Issuance of common stock upon exercise of options/warrants | $ 0 | 469 |  |  | 469 |  | 469
Stock-based compensation |  | 2,537 |  |  | 2,537 |  | 2,537
Sale of a noncontrolling interests |  | 2,201 |  |  | 2,201 | 439 | 2,640
Purchase of non-controlling interests |  |  |  |  |  | 979 | 979
Issuance of restricted stock, shares | 650,000 |  |  |  |  |  |
Dividends paid to noncontrolling interests |  |  |  |  |  | (18) | (18)
Change in cumulative foreign currency translation adjustment |  |  |  | (89) | (89) |  | (89)
Net income |  |  | 2,120 |  | 2,120 | 256 | 2,376
Ending balance, shares at Dec. 31, 2013 | 40,089,196 |  |  |  |  |  |
Ending balance, value at Dec. 31, 2013 | $ 4 | 173,622 | (173,656) | (50) | (80) | 2,290 | 2,210
Issuance of common stock upon exercise of options/warrants, shares | 1,579,695 |  |  |  |  |  |
Issuance of common stock upon exercise of options/warrants |  | 1,546 |  |  | 1,546 |  | 1,546
Stock-based compensation |  | 2,463 |  |  | 2,463 |  | 2,463
Sale of a noncontrolling interests |  |  |  |  |  | 200 | 200
Purchase of non-controlling interests |  | 119 |  |  | 119 | (315) | (196)
Issuance of restricted stock, shares | 1,156,785 |  |  |  |  |  |
Dividends paid to noncontrolling interests |  |  |  |  |  | (148) | (148)
Change in cumulative foreign currency translation adjustment |  |  |  | (62) | (62) |  | (62)
Net income |  |  | 1,376 |  | 1,376 | 309 | 1,685
Ending balance, shares at Dec. 31, 2014 | 42,825,676 |  |  |  |  |  |
Ending balance, value at Dec. 31, 2014 | $ 4 | 177,750 | (172,280) | (112) | 5,362 | 2,336 | 7,698
Issuance of common stock upon exercise of options/warrants, shares | 835,098 |  |  |  |  |  |
Issuance of common stock upon exercise of options/warrants |  | 594 |  |  | 594 |  | 594
Stock-based compensation |  | 7,635 |  |  | 7,635 |  | 7,635
Sale of a noncontrolling interests |  | 2,077 |  |  | 2,077 | 1,348 | 3,425
Purchase of non-controlling interests |  |  |  |  |  |  | (196)
Issuance of restricted stock, shares | 1,014,423 |  |  |  |  |  |
Forfeiture of restricted stock | (59,053) |  |  |  |  |  |
Issuance of stock for acquisition, shares | 1,665,045 |  |  |  |  |  |
Issuance of stock for acquisition, value |  | 9,241 |  |  | 9,241 |  | 9,241
Dividends paid to noncontrolling interests |  |  |  |  |  | (729) | (729)
Change in cumulative foreign currency translation adjustment |  |  |  | (41) | (41) |  | (41)
Net income |  |  | 7,709 |  | 7,709 | 929 | 8,638
Ending balance, shares at Dec. 31, 2015 | 46,281,189 |  |  |  |  |  |
Ending balance, value at Dec. 31, 2015 | $ 4 | $ 197,297 | $ (164,571) | $ (153) | $ 32,577 | $ 3,884 | $ 36,461

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